Home / 66,406.56-99,400.40-42,682.26

Finding the Fourth Proportional to 66,406.56, 99,400.40 and 42,682.26

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Solution

The fourth proportional to 66,406.56, 99,400.40 and 42,682.26 is: 63,888.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,406.56 : 99,400.40 = 42,682.26 : x
  2. Step 2: Convert to fraction form
    66,406.56/99,400.40 = 42,682.26/x
  3. Step 3: Cross multiply
    66,406.56x = 99,400.40 × 42,682.26
  4. Step 4: Simplify right side
    66,406.56x = 4,242,633,716.90
  5. Step 5: Solve for x
    x = 4,242,633,716.90/66,406.56
  6. Step 6: Final answer
    x = 63,888.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.